Aussie a proxy for physical gold?

The Aussie is very strong against the majors such as GBP, USD, EUR, JPY, and seems to be basically directly linked to commodity prices. What are your thoughts about the Aussie as a proxy for physical gold? If I buy Aussie $$, can this be considered the almost the same (obviously not quite as low risk) as buying physical gold? Is the Aussie one of the best / low risk paper currencies out there at the moment, due to it’s direct link with commodities? Any thoughts?